Synthesis of high-temperature CO2 adsorbents from organo-layered double hydroxides with markedly improved CO2 capture capacity

Abstract

Synthesis of highly efficient high-temperature CO₂ adsorbents from organo-layered double hydroxides (LDHs) is presented for the first time. We demonstrate that the intercalation of long carbon-chain organic anions markedly increases the CO₂ capture capacity (1.25 mmol g⁻¹), 2.5 times higher than that of traditional adsorbents (0.5 mmol g⁻¹). This work suggests a new direction for the synthesis of high-temperature CO₂ adsorbents.